Machine for making tubing



' 2 Sheets Sheet 1. PRIUK 8c T. J. PRICE. MAGHINE FOR MAKING TUBING.

. No.575,226. Patented1897.

(No Model.) 5 2 Sheets-Sheet 2.

w. 0. ERICK 55 T; J. PRICE. MACHINE FOR MAKING TUBING.

No. 575,225. Patented J55. 12, 1897.

Inventors W illiam al 'l'it'k and Thomas J Price by their NITEMD STATESWILLIAM C. FRICK AND THOMAS J. PRICE, OF DANVILLE, PENNSYLVANIA.

MACHINE FOR MAKING TUBING.

SPECIFICATION forming part of Letters Patent No. 575,225, dated January12, 1897.

Application filed December 14, 1894. Serial No. 531,846. (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM C. FRICK and THOMAS J. PRICE, citizens ofthe United States, and residents of Danville, Montour county,Pennsylvania, have invented certain Improvements inMachines for MakingTubing, of which the following is a specification.

The object of our invention is to construct a machine for makingunwelded tubes from flat skelps.

In the accompanying drawings, Figure 1 is a longitudinal section of ourimproved machine for rolling and shaping tubes. Fig. 2 is a plan view ofFig. 1. Fig. 3 is a diagram View illustrating the different forms whichthe skelp assumes in passing through the machine. Fig. 4 is aperspective view of the skelp, showing the different stages of bending.Fig. 5 is a detached perspective view of the first former. Fig. 6 is adetached perspective view of the second former.

In carrying out our invention we use a fiat skelp, preferably slightlythicker than the required thickness of the tube to be rolled. This skelpis passed between the reducing and feeding rolls ct a, which are mountedin the housings A, one of said rolls-the upper, by preferencebeingdriven in any-suitable manner. In order to guide the skelp into therolls, I provide guide-plates a. on each side of the table a, so thatthe skelp will be guided between the rolls at the proper point. Suitablymounted on the frame, beyond the rolls, is a former B. The end I) ofthis former is perfectly fiat and is adapted to rest against the lowerroll a. This former has a wide mouth and is gradually contracted into aU shape, as shown clearly in Fig. 2.

Pivoted at b is a cover-plate B, which fits within the former and isshaped to correspond with the interior of said former, there beingsufficient space left between the two for the passage of the skelp.Connected to the cover-plate by a rod 5 and a lever 12 is a weight bwhich tends to keep the cover-plate always in contact with the upperroll a, so that the passage of the skelp between the plate and theformer is insured. The lever 19 is mounted on a bar a on the housings A.Other means of connecting the weight to the plate maybe used withoutdeparting from visible.

our invention, and a spring may be substituted for the weight.

Beyond the former is a pair of rolls 0 c. The under roll a has aU-shaped groove, and the upper roll 0 has a U shaped tongue adapted tothe groove, the rolls being so set that they will engage thepartially-formed tube as it passes from the former B, and these rollsforce it into the former D, which is beyond the rolls 0 c. This formeris made in two parts 01 d and is so shaped that it will turn the unbentends of the partially-formed tube over a mandrel d pivoted at e to theframe of the machine. This mandrel is preferably provided with a tongue(i which extends to the rolls a c, in order that the partiallyformedtube will be directed to the final former.

After the tube is bent in the final former so that the edges nearly abutthey are passed between closing and shaping rolls 6 e, which are groovedto fit the tube. The tube then passes from these closing andshapingrolls through the box and is discharged.

If it is desired to confine the tube until it sets, a train ofsetting-rolls is provided, consisting of a series of grooved rolls f,which are arranged close together, so that they will confine the tube atintervals and hold it until the metal sets.

The abutting edges of the tube as it comes from the rolls are closetogether, and, in fact, in most instances touch, so that only a seam isThus while the tube is not a welded tube still it is very strong, owingto its shape and the material from which it is made, the material weprefer to use being high-carbon steel.

e claim as our invention- 1. The combination of a machine for rollingtubes in a continuous operation, said ma chine consisting in reducingand feeding rolls a a, a former 13 having a pivoted cover-plate B, aweight adapted to keep said plate against the upper feed-roll a, theplate and former being tapered and shaped to bend the flat blank to Ushape, rolls beyond the former, one of said rolls having a U-shapedgroove in its periphery, the other having a U-shaped tongue adapted tothe groove, a former beyond the rolls U-shaped at the inlet l the otherhaving a U-shaped tongue adapted to the groove, the former D beyond thispair of rolls, said former tapering from a U shape to a round and havinga pivoted mandrel therein, with a train of setting-rolls adapted toconfine the tube until the metal sets, substantially as described.

3. A device for forming a blank or skelp into a trough or U shaped form,consisting essentially of a former having a tapered passage-way thereintapered from the flat to a U shape, With a cover pivoted at the U-shaped end of the former, the opposite end of said cover being shaped toconform to one of the feeding-rolls, and means for keeping the coveragainst the roll, substantially as described.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing Witnesses.

VVILTAIAM O. FRIOK. THOMAS J. PRICE.

\Vitnesses to the signature of \Villiam O. Frick:

WILL. A. BARR, JOSEPH H. KLEIN. Vitnesses to signature of Tho-mas J.Price:

ROBERT ADAMS, ALEX. I-I. GRoN-E.

